HIRSCHEY, M. (2003). Managerial economics ed.10. Thomson Learning.
Lua i Stíl Chicago (17ú heag.)HIRSCHEY, Mark. Managerial Economics Ed.10. Thomson Learning, 2003.
Lua MLA (8ú heag.)HIRSCHEY, Mark. Managerial Economics Ed.10. Thomson Learning, 2003.
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